Implement dynamic port allocation to avoid conflicts

[Stevo-G-Swag]

Fixes #147

Implement dynamic port allocation to avoid conflicts with reserved ports.

• computer-use-demo/image/x11vnc_startup.sh

  • Add functions to check port availability and find an available port.
  • Dynamically assign the VNC server port instead of hardcoding port 5900.
  • Update the netstat command to use the dynamically assigned port.

• computer-use-demo/image/novnc_startup.sh

  • Add functions to check port availability and find an available port.
  • Dynamically assign the VNC server port instead of hardcoding port 5900.
  • Modify the --vnc option to use the dynamic port.

• computer-use-demo/image/port_check.sh

  • Create a script to check port availability.
  • Use lsof to check if a port is in use.
  • Return an available port if the specified one is in use.

• computer-use-demo/.ports

  • Maintain a list of reserved ports.
  • Include common ports used by macOS and other systems.

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For more details, open the Copilot Workspace session.

[p-i-]

I would recommend against merging this. Yes, hard-coding the ports is ugly. But a solution should be clean and complete.

I've bumped into conflicts of 5900 with VNC, and flagged this #147

I'll update my issue with a suggested solution path. I think that's the best structure.